EP3702876A1 - Soupape à diaphragme actionné par paraffine - Google Patents

Soupape à diaphragme actionné par paraffine Download PDF

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Publication number
EP3702876A1
EP3702876A1 EP19211114.4A EP19211114A EP3702876A1 EP 3702876 A1 EP3702876 A1 EP 3702876A1 EP 19211114 A EP19211114 A EP 19211114A EP 3702876 A1 EP3702876 A1 EP 3702876A1
Authority
EP
European Patent Office
Prior art keywords
valve
actuator
paraffin
heater
operably connected
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP19211114.4A
Other languages
German (de)
English (en)
Inventor
Vinay Kumar Srinivasa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hamilton Sundstrand Corp
Original Assignee
Hamilton Sundstrand Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hamilton Sundstrand Corp filed Critical Hamilton Sundstrand Corp
Publication of EP3702876A1 publication Critical patent/EP3702876A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/002—Actuating devices; Operating means; Releasing devices actuated by temperature variation
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/1919—Control of temperature characterised by the use of electric means characterised by the type of controller
    • G05D23/1921—Control of temperature characterised by the use of electric means characterised by the type of controller using a thermal motor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
    • F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
    • F02D9/1065—Mechanical control linkage between an actuator and the flap, e.g. including levers, gears, springs, clutches, limit stops of the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/025—Actuating devices; Operating means; Releasing devices electric; magnetic actuated by thermo-electric means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
    • F16K31/047—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor characterised by mechanical means between the motor and the valve, e.g. lost motion means reducing backlash, clutches, brakes or return means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K7/00—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves
    • F16K7/12—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with flat, dished, or bowl-shaped diaphragm
    • F16K7/126—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with flat, dished, or bowl-shaped diaphragm the seat being formed on a rib perpendicular to the fluid line
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
    • F01N2240/36—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being an exhaust flap
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/04—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning exhaust conduits
    • F02D9/06—Exhaust brakes

Definitions

  • Exemplary embodiments pertain to the art of valves and valve control.
  • liquid or gas flow control through the valve is accomplished utilizing one or more solenoids, or by utilizing manual operation to open and/or close the valve thereby regulating the flow of liquid or gas therethrough.
  • the solenoid control system requires an electronic circuit, which provides pull in current and hold in current. Solenoid-operated valves are often large and relatively heavy, and when any dust particles or other contaminants come in contact with the moving parts of the solenoid, the operation of the solenoid valve becomes very difficult, and in such cases the solenoid may not operate as required. Further, solenoid operated valves typically require a relatively high current to operate the solenoid, and the switching of the solenoid on and off causes electromagnetic interference, or noise, issues. EMI issues.
  • a valve in one embodiment, includes a valve housing defining a fluid flowpath therethrough, a valve element located in the valve housing and movable in the fluid flowpath to regulate a fluid flow therethrough, and a valve actuator operably connected to the valve element to urge movement of the valve element in the fluid flowpath.
  • the valve actuator includes an actuator housing, a volume of paraffin located in the housing, and an actuator rod located in the actuator housing and operably connected to the valve element, such that phase change of the paraffin urges movement of the actuator rod between a first position and a second position, thereby moving the valve element between a retracted position and an extended position.
  • valve element is a flexible diaphragm having a movable diaphragm portion connected to the actuator rod and movable across the fluid flowpath via movement of the actuator rod.
  • the diaphragm is formed from a rubber material.
  • a heater operably is connected to the actuator housing to heat the actuator housing and thereby heat the volume of paraffin.
  • a constant voltage source is operably connected to the heater to power operation of the heater.
  • a pulse width modulation controller is operably connected to the constant voltage source and the heater to control heating time of the heater.
  • a temperature sensor is located at the actuator housing to detect an actuator temperature, the sensed temperature utilized in operation of the heater.
  • a switching element is operably connected to the temperature sensor to switch the heater on and or off based on the sensed temperature.
  • the switching element includes a Mofset.
  • a plurality of heat sink fins are located at the actuator housing to improve cooling time of the volume of paraffin.
  • changing the phase of the paraffin from a solid to a liquid urges the actuator rod from a retracted position to an extended position, thereby moving the valve element to restrict the fluid flow through along the flowpath.
  • a method of regulating a flow along a fluid flowpath includes changing a phase of a volume of paraffin located in an actuator housing, urging an actuator rod in operable communication with the volume of paraffin between a first position and a second position based on the phase change of the paraffin, and moving a valve element between a retracted position and an extended position by the movement of the actuator rod between the first position and the second position.
  • the volume of paraffin is heated via a heater operably connected to the actuator to urge the phase change of the volume of paraffin.
  • phase change of the volume of paraffin results in volumetric expansion of the paraffin, thus urging the actuator rod toward the second position.
  • operation of the heater is controlled via a pulse width modulation controller operably connected to the heater.
  • a temperature of the actuator housing is detected via a temperature sensor, and the heater is operated utilizing the sensed temperature.
  • a switching element is operably connected to the temperature sensor and the heater to control the operation of the heater.
  • the switching element is a Mofset.
  • heat is dissipated from the actuator via one or more heat sink fins disposed at the actuator housing.
  • valve element is a diaphragm having a movable diaphragm portion operably connected to the actuator rod, the movable diaphragm portion moved between the retracted position and the extended position with movement of the actuator rod.
  • FIG. 1 is a cross-sectional view of an embodiment of a high output paraffin actuated diaphragm valve 10.
  • the diaphragm valve 10 includes a valve housing 12 defining a fluid flowpath 14 therethrough and a diaphragm 16 located in the valve housing 12 that is movable into and/or out of the fluid flowpath 14 to control a fluid flow 18, which may be, for example, a liquid, gas, or two-phase fluid, along the fluid flowpath 14.
  • the fluid flowpath 14 includes an upstream flowpath portion 20 and a downstream flowpath portion 22, separated by a flowpath throat 24.
  • the flowpath throat 24 is defined in part by a protrusion 26 of the valve housing 12 into the fluid flowpath 14.
  • the diaphragm 16 includes a fixed diaphragm portion 28 and a movable diaphragm portion 30.
  • the fixed diaphragm portion 28 is secured in the valve housing 12 by, for example, one or more screws 32 or other fasteners.
  • the movable diaphragm portion 30 is operably connected to an actuator, in particular a high output paraffin (HOP) actuator 34.
  • HOP high output paraffin
  • the HOP actuator 34, the diaphragm 16 and the valve housing 12 are arranged in a stack, with the diaphragm 16 located between the HOP actuator 34 and the valve housing 12.
  • a spacer 36 is located between the diaphragm 16 and the HOP actuator 34.
  • the HOP actuator 34 includes an actuator housing 38 and an actuator rod 40 located in the actuator housing 38 and connected to the movable diaphragm portion 30.
  • a heater 42 is located at the actuator housing 38 and is connected to an electrical power source 52 by heater wires 44.
  • a volume of paraffin 46 is located in the actuator housing 38, and is retained in the actuator housing 38 by a paraffin retainer 48.
  • the actuator rod 40 extends from inside the actuator housing 38 through the paraffin retainer 48 to the movable diaphragm portion 30.
  • the paraffin 46 When the heater 42 is activated, the paraffin 46 is heated and expands by, for example, about 15% volumetric expansion, thus pushing the actuator rod 40 further through the paraffin retainer 48. The movement of the actuator rod 40 urges the movable diaphragm portion 30 across the fluid flowpath 14 to an extended or closed position, such as shown in FIG. 2 . This restricts the fluid flow 18 along the fluid flowpath 14.
  • the paraffin 46 utilized is a narrow melting type of paraffin, and may also contain additives to improve heat conduction.
  • the paraffin 46 cools and volumetrically contracts. This contraction of the paraffin 46 moves the actuator rod 38 and thus the movable diaphragm portion 30 to a retracted or open position allowing greater fluid flow 18 along the fluid flowpath 14.
  • the actuator housing 38 includes a heat sink configuration, for example a plurality of fins 50 to improve heat dissipation from the HOP actuator 34 when the heater 42 is deactivated. Improved heat dissipation results in faster cooling of the paraffin 46 and thus improved actuation response time.
  • a constant voltage source 52 is connected to the heater 42 to provide current flow to the heater 42.
  • the voltage source 52 is activated by a control system 80.
  • a pulse width modulation (PWM) controller 54 is connected to the voltage source 52 and to the heater 42.
  • the PWM controller 54 is utilized to control the heating time of the heater 42 and the paraffin 46, which controls the valve closing time.
  • FIG. 5 another embodiment utilizes a microcontroller 56, which generates a PWM signal.
  • a Mofset driver 58 and a Mofset 60 are connected to the microcontroller 56 and to the heater 42 to control the heater 42 temperature.
  • a temperature sensor 62 at the heater 42 detects the heater 42 temperature, and provides feedback to the microcontroller 56, in some embodiments utilizing a signal conditioner 64 to process the temperature signals from the temperature sensor 62.
  • the microcontroller 56 Based on the detected heater 42 temperature, the microcontroller 56 provides a signal to the Mofset driver 58 to switch the Mofset 60, thereby switching current flow on or off as needed from the voltage source 52 through the heater 42.
  • the microcontroller 56 utilizes an algorithm to generate the PWM signal based on a required actuation time, paraffin material expansion rate, or the like.
  • the high output paraffin actuated diaphragm valves 10 disclosed herein may be utilized in a wide array of applications including, but not limited to, fuel inerting systems in aircraft, aircraft fuel jettisoning systems, or hydraulic & pneumatic actuators in an aircraft.
  • Complex electronics are not required to turn the valve on or off, where as in a solenoid operated valve, a pull in current and a hold in current are required, requiring more complex electronic control.
  • Diaphragm valve 10 can have highly reduced EMI issues compared to a solenoid operated valve, and dust or contaminations will not affect the device operation.
  • the construction of the valve is less bulky compared to a solenoid operated valve which can be helpful in reducing the overall system weight. Further the diaphragm valve 10 is corrosion resistant and provides smooth operation, and has reduced operational noise and vibration.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Temperature-Responsive Valves (AREA)
  • Details Of Valves (AREA)
EP19211114.4A 2019-02-27 2019-11-25 Soupape à diaphragme actionné par paraffine Withdrawn EP3702876A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IN201911007680 2019-02-27

Publications (1)

Publication Number Publication Date
EP3702876A1 true EP3702876A1 (fr) 2020-09-02

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ID=68655309

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19211114.4A Withdrawn EP3702876A1 (fr) 2019-02-27 2019-11-25 Soupape à diaphragme actionné par paraffine

Country Status (2)

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US (1) US11187345B2 (fr)
EP (1) EP3702876A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11662037B2 (en) * 2019-01-18 2023-05-30 Coolit Systems, Inc. Fluid flow control valve for fluid flow systems, and methods
CN112303325A (zh) * 2020-10-27 2021-02-02 中国电子科技集团公司第十八研究所 一种电控加热执行器
US11708914B2 (en) * 2020-11-24 2023-07-25 Battelle Energy Alliance, Llc Phase-change valves and related methods

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US3168805A (en) * 1963-05-03 1965-02-09 American Radiator & Standard Thermal power element
US3546437A (en) * 1966-12-05 1970-12-08 Tech Studien Ag Automatic control systems
GB2011072A (en) * 1977-11-25 1979-07-04 Danfoss As Improvements in and relating to a thermally-responsive actuator for a valve
DE2936311A1 (de) * 1978-09-07 1980-03-27 Robertshaw Orient Auf waerme ansprechende temperatursteuervorrichtung
DE3311493A1 (de) * 1982-03-31 1983-10-13 Herz Armaturen GmbH, 1100 Wien Vorrichtung zur einzelraum- oder raumzonentemperaturregelung
GB2177182A (en) * 1985-06-27 1987-01-14 Furness Controls Ltd Valves
US5971288A (en) * 1997-04-22 1999-10-26 Standard-Thomson Corporation Expansion composition
US20130263799A1 (en) * 2012-04-09 2013-10-10 Hyundai Motor Company Glow plug and electric thermostat with the same
US20150316165A1 (en) * 2013-10-31 2015-11-05 Smc Corporation Thermoelement and thermovalve incorporating thermoelement

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FR2805591B1 (fr) 2000-02-28 2002-05-31 Vernet Sa Dispositif thermostatique a deux regimes de regulation commandes selectivement
US6494433B2 (en) 2000-06-06 2002-12-17 The Regents Of The University Of Michigan Thermally activated polymer device
JP3672820B2 (ja) * 2000-12-28 2005-07-20 Ｓｍｃ株式会社 電磁弁
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EP2272123B1 (fr) * 2008-04-11 2014-05-07 Christopher M. Mcwhinney Membrane pour appareil électrochimique
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Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3168805A (en) * 1963-05-03 1965-02-09 American Radiator & Standard Thermal power element
US3546437A (en) * 1966-12-05 1970-12-08 Tech Studien Ag Automatic control systems
GB2011072A (en) * 1977-11-25 1979-07-04 Danfoss As Improvements in and relating to a thermally-responsive actuator for a valve
DE2936311A1 (de) * 1978-09-07 1980-03-27 Robertshaw Orient Auf waerme ansprechende temperatursteuervorrichtung
DE3311493A1 (de) * 1982-03-31 1983-10-13 Herz Armaturen GmbH, 1100 Wien Vorrichtung zur einzelraum- oder raumzonentemperaturregelung
GB2177182A (en) * 1985-06-27 1987-01-14 Furness Controls Ltd Valves
US5971288A (en) * 1997-04-22 1999-10-26 Standard-Thomson Corporation Expansion composition
US20130263799A1 (en) * 2012-04-09 2013-10-10 Hyundai Motor Company Glow plug and electric thermostat with the same
US20150316165A1 (en) * 2013-10-31 2015-11-05 Smc Corporation Thermoelement and thermovalve incorporating thermoelement

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Publication number Publication date
US11187345B2 (en) 2021-11-30
US20200271237A1 (en) 2020-08-27

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